Hi, each night we are testing mpich/master with our petsc-based code. I don't know if PETSc team is doing the same thing with mpich/master? (Maybe it is a good idea?) Everything was fine (except the issue https://github.com/pmodels/mpich/issues/2892) up to commit 7b8d64debd, but since commit mpich:a8a2b30fd21), I have a segfault on a any parallel nightly test. For example, a 2 process test ends at almost different execution points: rank 0: #003: /lib64/libpthread.so.0(+0xf870) [0x7f25bf908870] #004: /pmi/cmpbib/compilation_BIB_dernier_mpich/COMPILE_AUTO/BIB/bin/BIBMEFGD.opt() [0x64a788] #005: /lib64/libc.so.6(+0x35140) [0x7f25bca18140] #006: /lib64/libc.so.6(__poll+0x2d) [0x7f25bcabfbfd] #007: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x1e4cc9) [0x7f25bd90ccc9] #008: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x1ea55c) [0x7f25bd91255c] #009: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0xba657) [0x7f25bd7e2657] #010: /opt/mpich-3.x_debug/lib/libmpi.so.0(PMPI_Waitall+0xe3) [0x7f25bd7e3343] #011: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(PetscGatherMessageLengths+0x654) [0x7f25c4bb3193] #012: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecScatterCreate_PtoS+0x859) [0x7f25c4e82d7f] #013: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecScatterCreate+0x5684) [0x7f25c4e4d055] #014: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecCreateGhostWithArray+0x688) [0x7f25c4e01a39] #015: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecCreateGhost+0x179) [0x7f25c4e020f6] rank 1: #002: /pmi/cmpbib/compilation_BIB_dernier_mpich/COMPILE_AUTO/GIREF/lib/libgiref_opt_Util.so(traitementSignal+0x2bd0) [0x7f62df8e7310] #003: /lib64/libc.so.6(+0x35140) [0x7f62d3bc9140] #004: /lib64/libc.so.6(__poll+0x2d) [0x7f62d3c70bfd] #005: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x1e4cc9) [0x7f62d4abdcc9] #006: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x1ea55c) [0x7f62d4ac355c] #007: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x12c9c5) [0x7f62d4a059c5] #008: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x12e102) [0x7f62d4a07102] #009: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0xf17a1) [0x7f62d49ca7a1] #010: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x3facf) [0x7f62d4918acf] #011: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x3fc3d) [0x7f62d4918c3d] #012: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0xf18d8) [0x7f62d49ca8d8] #013: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x3fb88) [0x7f62d4918b88] #014: /opt/mpich-3.x_debug/lib/libmpi.so.0(+0x3fc3d) [0x7f62d4918c3d] #015: /opt/mpich-3.x_debug/lib/libmpi.so.0(MPI_Barrier+0x27b) [0x7f62d4918edb] #016: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(PetscCommGetNewTag+0x3ff) [0x7f62dbceb055] #017: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(PetscObjectGetNewTag+0x15d) [0x7f62dbceaadb] #018: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecScatterCreateCommon_PtoS+0x1ee) [0x7f62dc03625c] #019: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecScatterCreate_PtoS+0x29c4) [0x7f62dc035eea] #020: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecScatterCreate+0x5684) [0x7f62dbffe055] #021: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecCreateGhostWithArray+0x688) [0x7f62dbfb2a39] #022: /opt/petsc-3.8.3_debug_mpich-3.x_debug/lib/libpetsc.so.3.8(VecCreateGhost+0x179) [0x7f62dbfb30f6] Have some other users (PETSc users?) reported problem? Thanks, Eric ps: usual informations: mpich logs: http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_conf... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_conf... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_mpic... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_c.tx... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_m.tx... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_mi.t... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_open... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_mpl_... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_pm_h... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_pm_h... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_mpie... Petsc logs: http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_conf... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_make... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_defa... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_RDic... http://www.giref.ulaval.ca/~cmpgiref/dernier_mpich/2018.03.12.05h39m54s_CMak... _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss